t_instance_outcome cInstanceObject::TryToBecomeInstance(int inst) { // test instance, tries to become it
_info("Trying instance inst="<<inst);
const std::string igrp_name = std::string("instancegroup_")
+ m_program_name // testprogram
+ ( (m_range==e_range_user) ? ("_user_n_"+cMyNamedMutex::EscapeMutexNameWithLen(GetUserName())) : ( "_user_ANY" ) ) // testprogram_alice testprogram
+ ( (m_range==e_range_maindir) ? ("_dir_n_"+cMyNamedMutex::EscapeMutexNameWithLen(GetDirName())) : ( "_dir_ANY" ) )
;
_info("igrp_name=" << igrp_name);
boost::interprocess::permissions mutex_curr_perms;
if (m_range==e_range_system) mutex_curr_perms.set_unrestricted(); // others users on same system need to synchronize with this
std::ostringstream mutex_name_str; mutex_name_str << igrp_name << "_instM" << inst;
std::string mutex_name = mutex_name_str.str();
// mutex_name="name1foo1";
_info("Will try to become instance as mutex_name="<<mutex_name);
m_curr_mutex.reset( new cMyNamedMutex ( boost::interprocess::open_or_create, mutex_name.c_str(), mutex_curr_perms ) );
// we created this mutex or it existed
bool curr_locked = m_curr_mutex->try_lock_msg(str_to_vec("La"));// GetProcessIdentification() ) );
if (curr_locked) { // we locked it!
_info("WE BECOME INSTANCE: Created and locked the Mc - we became the instance at inst="<<inst);
m_curr_mutex->SetOwnership(true); // I own this mutex e.g. M5
// I am probably the leader
// ... TODO ... ping all lower numbers are they responding after all to ping ...
_info("I will start responding to pings (curr)");
m_pingable_curr.reset(new cInstancePingable( mutex_name, mutex_curr_perms )); // start responding to ping
m_pingable_curr->Run();
return e_instance_i_won; // we created and locked (or just locked - reclaimed) an instance
}
_info("Can not create/lock the Mc so we lost or it is dead. inst="<<inst);
bool other_is_alive = PingInstance(mutex_name, mutex_curr_perms);
if (! other_is_alive) {
_info("The other instance is dead!");
return e_instance_seems_dead;
}
return e_instance_i_lost;
}
World::World(const std::string& file_path)
{
setup_engine();
// Open the file
std::fstream fin(file_path);
std::string command;
// Insert all of the entities we will need.
entities.insert(std::make_pair("player", std::vector<Entity*>()));
entities.insert(std::make_pair("map", std::vector<Entity*>()));
entities.insert(std::make_pair("zombie", std::vector<Entity*>()));
entities.insert(std::make_pair("item", std::vector<Entity*>()));
// Iterate over each line in the file.
std::cout << "* Constructing World" << std::endl;
while (std::getline(fin, command)) {
// Create a vector to store the tokens, and convert the line to a string stream.
std::vector<std::string> tokens;
str_to_vec(command, tokens);
if (tokens.size() == 4)
{
std::cout << " -> Entity - Type: " << tokens[0] << " File: " << tokens[1] << " Position: " << tokens[2] << " Rotation: " << tokens[3] << std::endl;
// Construct the entity, and create position and rotation values.
irr::core::vector3df position(str_to_vec3df(tokens[2]));
irr::core::vector3df rotation(str_to_vec3df(tokens[3]));
std::string path = "../Data/data/";
path += tokens[1] + ".txt";
// Simple dispatcher for each of the valid types.
if (tokens[0] == "player") entities["player"].push_back(new Player(this, path, position, rotation));
else if (tokens[0] == "item") entities["item"].push_back(new Item(this, path, position, rotation));
else if (tokens[0] == "map") entities["map"].push_back(new Map(this, path, position, rotation));
else if (tokens[0] == "zombie") entities["zombie"].push_back(new Zombie(this, path, position, rotation));
}
else
{
std::cout << " -> Entity - Malformed command, ignoring" << std::endl;
}
}
std::cout << "* Constructing World Finished" << std::endl;
}